- Non-childbearing potential defined as pre-menopausal females with a documented tubal ligation or hysterectomy; or postmenopausal defined as 12 months of spontaneous amenorrhea (in questionable cases a blood sample with simultaneous follicle stimulating hormone [FSH] >40 milli international units MIU/ milliliter (mL) and estradiol < 40 picograms (pg)/mL (<147 picomole [pmol]/liter [L]) is confirmatory). Females on hormone replacement therapy (HRT) and whose menopausal status is in doubt will not be allowed.